body,
ul,
h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: 100%;
    font-weight: normal;
}

a {
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    border: 0px;
}


/* 清除浮动，解决margin-top塌陷 */

.clearfix:before,
.clearfix:after {
    content: '';
    display: table;
}

.clearfix:after {
    clear: both;
}

.clearfix {
    zoom: 1;
}

.fl {
    float: left;
}

.fr {
    float: right;
}